/*******************************************************************
* Copyright (c) 2010 BSUIR <romkisel@gmail.com>

* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:

* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
********************************************************************/

#include "objdrag.h"

ObjDrag::ObjDrag(QWidget *parent) :
    QLabel(parent)
{
    this->setAcceptDrops(true);
}

void ObjDrag::startDrag()
{
    QMimeData *pMimeData = new QMimeData;
    pMimeData->setText(this->objectName());

    QDrag *pDrag = new QDrag(this);
    pDrag->setMimeData(pMimeData);
    pDrag->exec();
}

void ObjDrag::mousePressEvent(QMouseEvent *pe)
{
    if (pe->button() == Qt::LeftButton)
    {
        m_ptDragPos = pe->pos();
    }
    QWidget::mousePressEvent(pe);
}

void ObjDrag::mouseMoveEvent(QMouseEvent *pe)
{
    if (pe->buttons() & Qt::LeftButton)
    {
        int distance = (pe->pos() - m_ptDragPos).manhattanLength();
        if (distance > QApplication::startDragDistance())
        {
            startDrag();
        }
    }
    QWidget::mouseMoveEvent(pe);
}
